Smartphones. A survey of smartphones owned by millennials was conducted by an organization. One aspect of this study involved the gender of smartphone owners. Of 3000 sampled men of 13+ years, 2109 owned a smartphone; and of 2000 sampled women of 13+ years, 1448 owned a smartphone. At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in the percentages of smartphone owners between men and women?